Finance calculators
Interest, loans, tax, discounts, and money math.
Tip Calculator
Split a bill with tip across any number of people.
Compound Interest Calculator
Future value with compound interest.
Loan Payment Calculator
Fixed monthly payment for an amortizing loan.
Simple Interest Calculator
Interest and total with I = Prt.
Discount Calculator
Sale price after a percent discount.
Sales Tax Calculator
Add sales tax to a net price.
ROI Calculator
Return on investment as a percent.